Testa v. Katt
330 U.S. 386 · Decided March 10, 1947 · Supreme Court of the United States
Record summary. This page is generated from the Supreme Court Database’s coded data about the case. It describes who decided what, not the Court’s reasoning. Read the opinion itself before relying on it. Not legal advice.
At a glance
Testa v. Katt was decided on March 10, 1947 unanimously (9–0). The Court reversed the lower court's decision and remanded the case. Justice Hugo L. Black wrote the opinion of the Court. SCDB classifies its main issue as “National supremacy, commodities” in the Federalism area.
Read the opinion
Case details
- Citations
- 330 U.S. 386 · 67 S. Ct. 810 · 91 L. Ed. 967 · 1947 U.S. LEXIS 2950
- Docket number
- 431
- Decided
- March 10, 1947
- Argued
- February 14, 1947
- Court era
- Vinson Court
- Decision type
- Opinion of the Court (orally argued)
- Disposition
- Reversed and remanded
- Outcome for petitioner
- The petitioning party received a favorable disposition
- Vote
- 9–0 (unanimous)
- Majority opinion
- Hugo L. Black
- Opinion assigned by
- Fred M. Vinson
- How the case arrived
- Certiorari
- Issue (SCDB)
- National supremacy, commodities
- Issue area
- Federalism
- Legal provision
- Article VI, Section 2 (supremacy clause)
- Type of law
- Constitution
- Decision direction (SCDB)
- Liberal what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice Hugo L. Black | Majority | Wrote an opinion |
| Justice Stanley F. Reed | Majority | |
| Justice Felix Frankfurter | Majority | |
| Justice William O. Douglas | Majority | |
| Justice Frank Murphy | Majority | |
| Justice Robert H. Jackson | Majority | |
| Justice Wiley B. Rutledge | Majority | |
| Justice Harold H. Burton | Majority | |
| Chief Justice Fred M. Vinson | Majority |
Full case caption
Testa et al. v. Katt
SCDB identifiers: case 1946-061, docket 1946-061-01.
Related decisions
Other cases on “National supremacy, commodities”
- Public Utilities Commission of California v. United StatesLaw held unconstitutional
- Hostetter v. Idlewild Bon Voyage Liquor Corp.Law held unconstitutional
- Department of Alcoholic Beverage Control for California v. Ammex Warehouse Co. of San Ysidro, Inc.Law held unconstitutional
- Allenberg Cotton Co., Inc. v. Pittman
- North Dakota v. United States
- Stephen P. Crosby v. National Foreign Trade CouncilLaw held unconstitutional
Cases on the same legal provision: Article VI, Section 2 (supremacy clause)
- West v. Oklahoma Tax Commission
- Regents of the University System of Georgia v. Carroll
- Esso Standard Oil Co. v. Evans
- Kern-Limerick, Inc. v. ScurlockLaw held unconstitutional
- Franklin National Bank of Franklin Square v. New York
- Society for Savings in the City of Cleveland v. BowersLaw held unconstitutional
Same Term, same area (Federalism)
- Bethlehem Steel Co. v. New York State Labor Relations Board
- Rice v. Santa Fe Elevator Corp.
- Rice v. Board of Trade of the City of Chicago
- United States v. Fullard-Leo
- United States v. CaliforniaLaw held unconstitutional
Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error